package advance_2;

import java.math.BigDecimal;

public class BigNumber {
    public static void main(String[] args) {
        double d=13/7.0;
        System.out.println(d);
        BigDecimal b=new BigDecimal("13");
        BigDecimal jieguo=b.divide(new BigDecimal(7),120,BigDecimal.ROUND_HALF_UP);
        System.out.println(jieguo);
    }
}
